natural gas extraction

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Is there a way to pump water back into the ground?

http://en.wikipedia.org/wiki/Subsidence

I was just thinking about the flooding in the midwest which is obviously saturated right now and about surrounding areas (desert and those which have experienced subsidence due to groundwater pumping, mining, natural gas extraction, etc.

it seems that if this were possible, we could reuse that water in some way beneficial to others who don’t have it, helping with groundwater contamination and protecting one of our most valuable resources.

Is there already a method of doing this? Is it even physically possible?

I look at that photo of subsidence in the San Joaquin valley epicting the ground levels from 1925 – 1977 and wonder just how much the ground has subsided since then.
sorry, *depicted

It is called water-banking and cities like Las Vegas already have a program in place to bank water for dry months.

In desert cities like Vegas, most of the annual rain comes in 3 to 4 large events that cause flooding. The flood waters are pumped (or allowed to drain) into a sandy formation beneath the city which used to be an aquifer but was pumped dry.

Then the water is drawn back out of the formation during the August/Sept. dry months and used to suppliment the city water supply.

Some cities in the San Joaquin Valley of California are also looking into water banking as an alternative to building dams and reserviors, since water banks don’t lose water to evaporation.

The reason why flood water from back east isn’t exported to California or the southwest is the sheer amount of electricity that would be needed to pump it up-hill over the rockies and deposit it in the west, not to mention the cost to build a pipeline that long.

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